(3:37 p.m. EDT) – Cunard Line is bumping up its dry dock of Queen Victoria due to a problem in one of its propulsion units. Two scheduled cruises are being canceled as a result. While the problem is being fixed, the ship also will get a multimillion-pound refit.

Cruise Critic first learned of the dry dock schedule change from member DB605, whose sailing was canceled.

"Due to a bearing in one of her propulsion units requiring replacement, unfortunately we will need to bring Queen Victoria into her planned dry dock earlier than scheduled," Cunard wrote in an email to DB605. "The issue does not affect the safety of the ship, however, our technical team have advised that it is necessary to rectify it before her scheduled docking in December 2015."

Passengers on the two affected sailings will receive future cruise credits of £100 per person, which can be used on any future Cunard cruise booked within the next two years. For passengers who don't want to rebook, Cunard will refund their cruise fare.

Taking place at the Blohm & Voss Shipyard in Hamburg, Germany, the refurbishment will see nine solo cabins added to the ship as well as new carpets and flat-screen TVs. Sun awnings will be put in the open area near the stern Lido pool on both sides of the Grills Upper Terrace to create more shade. Additionally, fine jewelry and watch shops will be created.

"While we are sorry to be canceling the two cruises, we are looking forward to welcoming all those affected back aboard a Cunard ship in the near future,” Cunard Director Angus Struthers said in a news release.

On the technological front, environmentally friendly scrubber technology is being installed, which will reduce the ship's gas emissions.